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Finding the Fourth Proportional to 659,601.40, 986,291.70 and 491,639.80

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Solution

The fourth proportional to 659,601.40, 986,291.70 and 491,639.80 is: 735,141.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,601.40 : 986,291.70 = 491,639.80 : x
  2. Step 2: Convert to fraction form
    659,601.40/986,291.70 = 491,639.80/x
  3. Step 3: Cross multiply
    659,601.40x = 986,291.70 × 491,639.80
  4. Step 4: Simplify right side
    659,601.40x = 484,900,254,129.66
  5. Step 5: Solve for x
    x = 484,900,254,129.66/659,601.40
  6. Step 6: Final answer
    x = 735,141.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.